Gazing Through the Barrel of a Rifle, Iconic Feeling c. 1950s Snapshot

It took me a bit to figure out that the scope our boy here is gazing through is in fact the (detached) barrel of a rifle. Which makes his ready-to-fight sort of posture feel especially apt, and the snapshot itself feel quite iconic. 

4 1/2" x 2 5/8" . Very good condition. Glossy snapshot with scalloped edge.